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to_ascii( text ) 

- encode 'text' from database encoding to ASCII

        to_ascii('\256\341k')


 to_ascii( text, int4 )

        - encode 'text' from 'int4' encoding to ASCII

          to_ascii('\256\341k', 8)


 to_ascii( text, name )

        - encode 'text' from 'name' encoding to ASCII

          to_ascii('\256\341k', 'LATIN2')


  Now is supported LATIN1, LATIN2, WIN1250. For other character sets I
haven't good resources. Add new encoding is easy...

 If encoding is not supported returns ERROR.

 Note --- not exists total corect conversion to ASCII, this function try
        convert chars those is _probably_ interpret-able in ASCII for
        others use ' '. But for example for all Czech characters it is
        sufficient ... hmm Chinese / JAP and other complicated langs
have
        bad luck here :-(

                                                Karel
This commit is contained in:
Bruce Momjian 2000-08-04 15:45:12 +00:00
parent a1464e971c
commit 317ff59ced
2 changed files with 12 additions and 3 deletions
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5
src/backend/utils/adt/Makefile
View File

@ -1,7 +1,7 @@
#
# Makefile for utils/adt
#
# $Header: /cvsroot/pgsql/src/backend/utils/adt/Makefile,v 1.41 2000/07/30 22:13:52 tgl Exp $
# $Header: /cvsroot/pgsql/src/backend/utils/adt/Makefile,v 1.42 2000/08/04 15:45:07 momjian Exp $
#
subdir = src/backend/utils/adt
@ -23,7 +23,8 @@ OBJS = acl.o arrayfuncs.o arrayutils.o bool.o cash.o char.o \
regexp.o regproc.o ruleutils.o selfuncs.o sets.o \
tid.o timestamp.o varbit.o varchar.o varlena.o version.o \
network.o mac.o inet_net_ntop.o inet_net_pton.o \
ri_triggers.o pg_lzcompress.o pg_locale.o formatting.o
ri_triggers.o pg_lzcompress.o pg_locale.o formatting.o \
ascii.o
all: SUBSYS.o

10
src/include/catalog/pg_proc.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: pg_proc.h,v 1.157 2000/08/03 23:07:46 tgl Exp $
* $Id: pg_proc.h,v 1.158 2000/08/04 15:45:12 momjian Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
@ -2442,6 +2442,14 @@ DESCR("aggregate transition function");
DATA(insert OID = 1844 ( interval_avg PGUID 12 f t t t 1 f 1186 "1187" 100 0 0 100 interval_avg - ));
DESCR("AVG aggregate final function");
/* To ASCII conversion */
DATA(insert OID = 1845 ( to_ascii PGUID 12 f t t t 1 f 25 "25" 100 0 0 100 to_ascii_default - ));
DESCR("encode text from DB encoding to ASCII text");
DATA(insert OID = 1846 ( to_ascii PGUID 12 f t t t 2 f 25 "25 23" 100 0 0 100 to_ascii_enc - ));
DESCR("encode text from encoding to ASCII text");
DATA(insert OID = 1847 ( to_ascii PGUID 12 f t t t 2 f 25 "25 19" 100 0 0 100 to_ascii_encname - ));
DESCR("encode text from encoding to ASCII text");
DATA(insert OID = 1850 ( int28eq PGUID 12 f t t t 2 f 16 "21 20" 100 0 0 100 int28eq - ));
DESCR("equal");
DATA(insert OID = 1851 ( int28ne PGUID 12 f t t t 2 f 16 "21 20" 100 0 0 100 int28ne - ));